China's largest online sales festival, dubbed Singles' Day, is getting longer as retailers try to entice frugal shoppers to spend more.

FILE - In this May 15, 2019, file photo, founder of Alibaba group Jack Ma arrives for the Tech for Good summit in Paris. (AP Photo/Thibault Camus, File)BEIJING – China’s best-known entrepreneur, e-commerce billionaire Jack Ma, made his fortune by taking big risks. That has prompted a flurry of speculation about what might happen to Ma, China's biggest global business celebrity and a symbol of its tech boom. “The Jack Ma Era is ended,” wrote a blogger under the name Yueyue Talks Technology. Jack Ma dresses up in a leather jacket, sunglasses and wig to perform rock songs at Alibaba's annual employee festival in a Hangzhou.